JPH07236769A - Image display control method and an electronic game device using this method - Google Patents

Abstract

PURPOSE:To realize an effective display of warp movement in the roll playing game by combining a scroll function and a split function to perform a warp movement between any two points on a scroll screen. CONSTITUTION:Under the control of a CPU 10, a VDP12 defines points X and Y along which a character moves on the background image being scroll- displayed on the image data map developed by a RAM 13. The image data map developed by the RAM 13 is divided into four parts between the points X and Y, the four coordinates of deformation split of screen b and the four coordinates of deformation split of screen c are set in a split register 122, an image data of the area corresponding to screen d is read from the video RAM13, and it is set into the scroll register 121 under the control of the VDP12. The screens b and c are shifted to the boundary line direction respectively, the four coordinates of split of screens b and c is set to update the contents of the split register 122.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display control method and an electronic play apparatus using the same, and more particularly to a method and apparatus for effectively displaying an instantaneous long distance movement in a role playing game in the electronic play apparatus. .

[0002]

2. Description of the Related Art Electronic amusement apparatuses, which have a CPU in the apparatus body and display an image on a monitor display device to play a game by controlling the execution of a game program, have become widespread.

Various game programs are provided, one of which is role-playing in which a background is scrolled in sequence and a sprite which is a character whose movement is controlled by a player's operation is displayed on the scroll surface. There is a game.

Further, in this role-playing game, the character may be momentarily moved to a long distance and displayed with an effective effect (this display is called warp). In the image display control method according to the related art for such an effect, for example, when moving from the A point to the B point, the screen at the A point is faded out as a first example,
There is a method of switching the screen by fading in the screen at the point B, and a second example is a method of moving the screen at the point A to the screen at the point B by high speed scrolling.

[0005]

However, each of the above-mentioned conventional methods has drawbacks. That is, the first method gives the impression that the flow of the game is interrupted. Furthermore,
In the second method, the impression given to the player is no different from the movement by the vehicle.

Therefore, it is an object of the present invention to provide an image display control method and an electronic play apparatus using the same, which solve the drawbacks of the conventional methods.

[0007]

According to the present invention, an image display control method is an image display control method for displaying an image by means of a sprite and a scroll, and an area expanded at least in the video RAM and larger than the display screen is displayed. Two points (X, Y) are defined on the map of the image data, and two scroll areas (A, B) including each of the defined two points (X, Y) and four points between these areas. The map of the image data is divided into four so as to have two sprites (SP1, SP2) respectively specified by the coordinates.

The two sprites (SP1, SP2)
Has a common boundary line connecting the coordinates of two points, and the coordinates of the other two points forming a line parallel to the boundary line are sequentially changed so that the parallel line approaches the boundary line. Two sprites (S
P1 and SP2) are deformed.

Further, the two scroll areas (A, B) are brought into contact with each other by scrolling the two scroll areas (A, B) in a direction of approaching each other, and the X-point to the Y-point are touched on the display screen. The movement is displayed (step S7).

Further, the electronic play apparatus according to the present invention has a ROM for storing a game program, a CPU for controlling execution of the game program, and a video RA for expanding and storing image data in a map form, having at least an area wider than the screen.
M, a video display processor for reading the image data from the video RAM, synthesizing scroll and sprite data, and a frame buffer memory for inputting and storing one screen of image data from the video display processor and sequentially outputting the image data to a monitor display device. Have.

Then, in the video display processor, two points (X, Y) are defined on the map of the image data expanded in the video RAM, and the defined 2
Two sprites (SP, SP2) specified by coordinates of four points between two scroll areas (A, B) including each of points (X, Y) and this area (A, B)
The image data map is divided into four so as to have

The two sprites (SP1, SP2) are
The two sprites have a common boundary line connecting the coordinates of two points, and the coordinates of the other two points forming a line parallel to the boundary line are sequentially changed so that the parallel line approaches the boundary line. (SP
1, SP2) is deformed.

Further, the two scroll areas (A, B) are brought into contact with each other by scrolling the two scroll areas (A, B) in a direction in which they approach each other, and X point to Y point on the map of the image data. Show move to.

As a more specific aspect, in the image display control method and the electronic play apparatus, the two scroll areas (A, B) that are in contact with each other are scroll-moved in directions away from each other, and the two sprites (SP1, SP
In 2), the two sprites (SP1, SP2) are deformed by sequentially changing the coordinates of the other two points forming the parallel line so that the parallel line is separated from the boundary line.

[0015]

According to the present invention, the movement of warping between any two points on one scroll surface is performed by combining the scroll function and the sprite function.

That is, the one scroll surface is provided with two scroll areas (A, B) each including two points (X, Y) and two sprites specified by the coordinates of four points between the two scroll areas (A, B). It is divided into four so as to have (SP1, SP2). .

Furthermore, these two sprites (SP1, SP
2) has a common boundary line connecting the coordinates of two points, and the coordinates of the other two points forming a line parallel to this boundary line are sequentially changed so that the parallel line approaches the boundary line. Sprite (S
P1 and SP2) are deformed.

In addition, the two scroll areas (A,
By scrolling B) toward each other, the two scroll areas (A, B) are contacted, and the movement from the X point to the Y point is displayed.

By doing so, the four folding screens are represented as if the two folding screens at the center were folded and the two folding screens on both sides were connected.

Therefore, the above two points can be moved closer to each other. As a result, it is possible to give the player a feeling that the points themselves move without giving an impression that the flow of the game is interrupted.

[0021]

1 is a block diagram of an apparatus according to an embodiment of the present invention. 2 and 3 are operation flows of the embodiment of the method of the present invention. 4 to 7 are explanatory diagrams of the display operation shown corresponding to FIGS. 2 and 3.

Therefore, an embodiment of the present invention and its operation will be described below with reference to the drawings. In FIG. 1, 1
Reference numeral 0 denotes a CPU, which controls execution of a game program stored in the ROM 11.

Reference numeral 12 denotes a video display processor (hereinafter abbreviated as VDP), which reads image data expanded and stored in a map form in the video RAM 13 in response to a command from the CPU 10, and is a feature of the present invention described later. Image control of the scroll and sprite.

Reference numeral 16 denotes an input device, which is a device such as an input pad or a joystick operated by a player. Each of the devices described above is connected to a common bus (BUS) through which signals are transmitted and received between the devices.

Next, the operation of the VDP 12 according to the present invention will be described. Under the control of the CPU 10, VDP1
2 defines two points (X point and Y point) where the character on the scrolled background image moves in the map of the image data developed in the video RAM 13 (FIG. 2: step S1, FIG. 4). This definition is VDP1
2 is set in the command register.

In FIG. 1, the command register of the VDP 12 is shown as a scroll register 121 and a sprite register 122, taken out of the VDP 12 for convenience of understanding. Therefore, the definitions of the above two points are set in the scroll register 121.

Next, the map of the image data expanded in the video RAM 13 is divided into four points between the X point and the Y point.
The planes divided into four are defined as planes a, b, c, and d in order from the X point (FIG. 2: step S2, FIG. 5). Subdivided b, c
Replace faces with modified sprites (Fig. 2: Step S
3).

Here, the sprite is specified by designating the coordinates of four points. Further, different modified sprites are specified by changing the designation of the coordinates of the four points.

Therefore, in step S3, VD
P12 makes it possible to display changes in the areas of the b and c planes as shown in FIGS. 5 to 6, for example, by changing the scroll areas in the areas of the b and c planes into modified sprites.

That is, in FIG. 5, the coordinates of the four points of the modified sprite on the b-plane are (0, 10)-(0, 0)-(-1
0,0)-(-10,10). On the other hand, the coordinates of the four points of the modified sprite on the c-plane are (0, 10)-(10, 1
0)-(10,0)-(0,0). These coordinates are set in the sprite register 122.

On the other hand, the d surface is replaced with the scroll B (FIG. 2: step S4). The d-plane is a region including the Y point. Therefore, the image data of the area corresponding to the d-side is read from the video RAM 13 and set in the scroll register 121 under the control of the VDP 12. The scroll direction is VD independently of scroll A.
Controlled by P12.

Further, the surfaces b and c are moved in the direction of the boundary line (FIG. 2: step S5, FIG. 6). The coordinates of the planes b and c are set in the sprite register 122 as sprites. Here, the boundary line is a line connecting coordinates (0, 10)-(0, 0) common to the sprites of the b and c planes.

The four-point coordinates of the sprite on the plane b in FIG. 6 are (0,10)-(0,0)-(-5,0)-(-
5, 10). On the other hand, the four-point coordinates of the c-plane sprite are (0, 10)-(5, 10)-(5, 0)-(0,
0).

The set contents of the sprite register 122 are updated by the four-point coordinates of the sprites on the b plane and the c plane in FIG.

Comparing FIG. 6 with FIG. 5, the sprites on the b and c planes are folded down like a folding screen, and a
The sides that are in contact with the surface and the d surface are brought closer. At this time, face a and d
The surfaces are also scroll-moved in the opposite direction (FIG. 2: step S6, FIG. 6).

The scroll movement of the a-plane and the d-plane is V
The DP 12 sequentially coordinates the tip of the scroll set in the scroll register 121 with coordinates (0, 10) and (0,
This is performed by updating the set so as to approach the boundary line connected by 0).

That is, the tip of the scroll on the a-plane is (-10, 10) in FIG. 5 along with the deformation of the sprite on the b-plane.
(-10, 0) to (-5, 10)-(-5, FIG. 6)
0) is updated. Similarly, the tip of the d-plane scroll is
With the deformation of the sprite on the c-plane, (10, 1 in FIG.
0)-(10,0) to (5,10)-(5,
0) is updated.

By repeating the above process, the a surface and the d surface come into contact with each other (FIG. 2: step S7, FIG. 7). As a result, warp display can be performed between the X point and the Y point.

In the above process, the scroll register 12
1 and the data set in the sprite register 122 is the frame buffer memory 1 for each screen of data.
4 is stored in memory.

The data stored in the frame buffer memory 14 is sequentially sent to the monitor display device 15 and the corresponding display is performed. Since data is mapped to the scroll register 121 and the sprite register 122 beyond the display frame for one screen of the monitor display device 15, in reality, the display frame within the range shown in FIGS. The display is done in.

Further, a state in which the a surface and the d surface are in contact with each other (FIG. 7)
From then, the movement is performed in the opposite direction. That is, as shown in FIG. 3, the a surface and the d surface are scrolled in mutually opposite directions (FIG. 3: step S8). Further, the b surface and the c surface are deformed in the opposite directions (FIG. 3: step S9).

Therefore, referring to FIG. 7 to FIG.
The display screen changes as shown in FIG. The setting of the change data in the scroll register 121 and the sprite register 122 at this time is performed in the reverse process of the process described above.

As a result, the state before the scroll surface A is divided into four is returned (FIG. 3: step S10). And b,
The scroll register 121 and the sprite register 122 are updated and set so that the surfaces c and d become part of the scroll A (FIG. 3: step S11). After that, the background image is scrolled by scroll A, and the game continues.

[0044]

As described above according to the embodiments,
According to the present invention, it is possible to fold a data map like a folding screen, express the bend of the space on the image display, and display the warp in a visible form.

As a result, it is possible to provide a game program that eliminates the unnaturalness at the time of warping in the conventional method.

[Brief description of drawings]

FIG. 1 is a block diagram of an apparatus according to an embodiment of the present invention.

FIG. 2 is an operation example flow of the method of the embodiment of the present invention (No. 1).

FIG. 3 is an operation example flow of the embodiment method of the present invention (part 2).

FIG. 4 is an operation explanatory diagram (1) of the present invention.

FIG. 5 is an operation explanatory diagram (2) of the present invention.

FIG. 6 is an operation explanatory diagram (3) of the present invention.

FIG. 7 is an operation explanatory diagram (4) of the present invention.

[Explanation of symbols]

 10 CPU 11 ROM 12 Video Display Processor 13 Video RAM 14 Frame Buffer Memory 15 Monitor Display Device 16 Input Device 121 Scroll Register 122 Sprite Register

Claims (4)

[Claims] 1. A display control method for displaying an image by sprite and scroll, wherein two points (X, Y) are displayed on a map of image data expanded in a video RAM (13) and having at least an area wider than the display screen. Defined (step S1), two scroll areas (A, B) including each of the defined two points (X, Y) and four coordinate points between the two scroll areas (A, B). The map of the image data is divided into four so as to have two specified sprites (SP1, SP2) (steps S2, S).
3), the two sprites (SP1, SP2) have a common boundary line connecting the coordinates [(0, 10), (0, 0)] of two points and form a line parallel to the boundary line. The coordinates of the other two points are sequentially changed so that the parallel line approaches the boundary line, and the two sprites (SP1, SP2) are deformed (step S
5) And, the two scroll areas (A, B) are brought into contact with each other by scroll-moving the two scroll areas (A, B) toward each other (step S6),
An image display control method characterized by displaying the movement of the image data from point X to point Y on the map (step S7). 2. The method according to claim 1, further comprising scrolling the two contacting scroll areas (A, B) in directions away from each other (step S
8) and by sequentially changing the coordinates of the other two points forming the parallel line so that the parallel line is separated from the boundary line, the two sprites (SP1, SP2) are changed.
P1 and SP2) are deformed (step S9). 3. A ROM (1 for storing a game program
1), a CPU (1 that controls execution of the game program
0), a video RAM (13) having at least an area wider than the display screen and expanding and storing the image data in a map form
And a video display processor (1) that reads the image data from the video RAM (13) and synthesizes the scroll and sprite data to form the image data.
2) has a frame buffer memory (14) for inputting and storing image data for one screen from the video display processor (12) and sequentially outputting it to a monitor display device (15), and in the video display processor (12) , Two points (X, Y) are defined on the map of the image data expanded in the video RAM (13) (step S1), and two scrolls including each of the defined two points (X, Y) The map of the image data is divided into four so as to have two sprites (SP1, SP2) specified by the coordinates of four points between the area (A, B) and the two scroll areas (A, B). Divide (steps S2, S
3), the two sprites (SP1, SP2) have a common boundary line connecting the coordinates [(0, 10), (0, 0)] of two points and form a line parallel to the boundary line. The coordinates of the other two points are sequentially changed so that the parallel line approaches the boundary line, and the two sprites (SP1, SP2) are deformed (step S
5) And, the two scroll areas (A, B) are brought into contact with each other by scroll-moving the two scroll areas (A, B) toward each other (step S6),
An electronic game device adapted to display the movement from the X point to the Y point on the map of the image data (step S7). 4. The method according to claim 3, further comprising scroll-moving the two contacting scroll regions (A, B) in a direction away from each other (step S
8) and by sequentially changing the coordinates of the other two points forming the parallel line so that the parallel line is separated from the boundary line, the two sprites (SP1, SP2) are changed.
An electronic game device characterized in that P1 and SP2) are deformed (step S9).